SEVENPAR 7.01
Spatial Helmert transformation with seven transformation parameters
Spatial Helmert transformation with seven transformation parameters
Software Specs
Publisher:............ Killet Softwareentwicklung GbR
License:............... Demo
Price:................... $130.00
File size:.............. 2355.2 MB
Downloads:.........
Release date:...... 19 Dec 2012
Last update:........ 28 Jun 2017
Publisher review for SEVENPAR 7.01:
Review by: Killet Softwareentwicklung GbR
Purpose of the program SEVENPAR is to produce a set with seven Helmert transformation parameters valid for an specific area, with which then arbitrary points of the area can be transformed from one coordinate system into another with high accuracy.
The Helmert transformation parameters are computed with a set of individual identical points. Those are points with known coordinates in both coordinate systems. For the computation at least three identical points must be present. In practice you will be anxious to use more identical points than those three necessities.
Cartesian coordinates or geographical coordinates with ellipsoidal height using the ellipsoid dimensions are suitable. Identical measuring points of higher order can be usually inquired or referred by the official institutions for measurement.
SEVENPAR is a tool that allows you to transform parameters.
The necessary ellipsoid half-axis are available in the program for the selection from lists. There are altogether to determine seven parameters, i.e. three translations, three rotations and a scale constant. The parameters are calculated by the compensation according to the method of the smallest squares (L2 norm, Helmert transformation).
Therefore must be dissolved a formula system with seven equations and seven unknown quantities. The coordinates of the identical points are tested intensively on outliers and deviations by different statistic procedures.
The quality of the computed seven Helmert parameters is documented by a cleavage matrix and by the computation of the middle, maximum and root mean square (RMS) deviations.
The seven Helmert parameters are calculated in the three most usual standards. Those are the Coordinate Frame Rotation, the Position Vector Transformation and the European Standard ISO 19111.
Requirements:
500 MHz
128 MB Memory
50 MB HD
Operating system:
Windows 8, Windows 7, Windows Vista, Windows XP, Windows 2000, Windows 98
SEVENPAR screenshots:
SEVENPAR download tags:
parameter transformation transform point transform coordinate point
Copyright information:
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